ORTHOSIA SUSPBCTA. 61 



able specimen that it was seen to have a fine cone, 

 surrounded by an irregular raised wall, formed by the 

 summits of the ribs, about thirty-one in number, and 

 badly defined. The eggs were in places covered by 

 a pavement of battledore moth scales, whether pur- 

 posely, or by accident I could not be sure. 



I got some G. vaccinii eggs to compare, and could 

 really detect no difference. The young larvaB of both 

 were much alike, but 0. suspecta tied its leaves together 

 more or less, a habit which I have never noticed in 

 G. vaccinii, the larva being satisfied with such shelter 

 as curled or applied leaves afford. 



When in their penultimate skins, they were of almost 

 the same outline, G. suspecta much darker in colouring. 

 In tubercles, head hairs, plates on second and 

 fourteenth segments, and especially in the forms of the 

 marblings, from which the markings of Orthosia larvae 

 result, they are identical ; both also taper remarkably 

 to the head, a feature which is even more pronounced in 

 adult 0. suspecta, but is nearly lost in adult G. vaccinii. 

 The most evident difference (apart from the darker 

 colouring of 0. suspecta) is that in 0. suspecta the 

 pale dorsal line is very marked and distinct, and 

 the subtrapezoidal line is broken into by the mar- 

 blings, so as to be discontinuous, though recognisable 

 as a line. In G. vaccinii the subtrapezoidal is more 

 pronounced than the dorsal line, it is ragged, but 

 broad enough not to be quite interrupted by the mar- 

 blings. The dorsal line in G. vaccinii is narrow, 

 and differs little from the ground colour, though it 

 is as smooth and well defined as in 0. suspecta. 



In accordance with the darker colour of G. suspecta, 

 the pale dots around the tubercles are smaller, and 

 hardly form a feature in the general facies of the 

 larva, and in the case of the anterior trapezoidals, 

 they do not extend in front of the tubercles. Simi- 

 larly, the plate on second segment has its dark areas 

 both darker and rather larger in 0. suspecta. 



The lateral line separating the .darker dorsal from 



